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include ID_LIKE in distro detection

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Signed-off-by: Alfredo Deza <adeza@anchore.com>
This commit is contained in:
Alfredo Deza 2020-11-10 12:37:35 -05:00
parent b3098f3423
commit 64d5554144
3 changed files with 17 additions and 8 deletions
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4
syft/distro/distro.go
View File

@ -10,6 +10,7 @@ type Distro struct {
Type Type
Version *hashiVer.Version
RawVersion string
IDLike string
}
// NewUnknownDistro creates a standardized Distro object for unidentifiable distros
@ -19,7 +20,7 @@ func NewUnknownDistro() Distro {
}
}
func NewDistro(t Type, ver string) (Distro, error) {
func NewDistro(t Type, ver, like string) (Distro, error) {
if ver == "" {
return Distro{Type: t}, nil
}
@ -31,6 +32,7 @@ func NewDistro(t Type, ver string) (Distro, error) {
Type: t,
Version: verObj,
RawVersion: ver,
IDLike: like,
}, nil
}

9
syft/distro/distro_test.go
View File

@ -33,7 +33,7 @@ func TestDistro_FullVersion(t *testing.T) {
for _, test := range tests {
name := fmt.Sprintf("%s:%s", test.dist, test.version)
t.Run(name, func(t *testing.T) {
d, err := NewDistro(test.dist, test.version)
d, err := NewDistro(test.dist, test.version, "")
if err != nil {
t.Errorf("could not create distro='%+v:%+v': %+v", test.dist, test.version, err)
}
@ -53,29 +53,34 @@ func TestDistro_MajorVersion(t *testing.T) {
dist Type
version string
expected string
like string
}{
{
version: "8",
expected: "8",
like: "",
},
{
version: "18.04",
expected: "18",
like: "debian",
},
{
version: "0",
expected: "0",
like: "",
},
{
version: "18.1.2",
expected: "18",
like: "debian",
},
}
for _, test := range tests {
name := fmt.Sprintf("%s:%s", test.dist, test.version)
t.Run(name, func(t *testing.T) {
d, err := NewDistro(test.dist, test.version)
d, err := NewDistro(test.dist, test.version, test.like)
if err != nil {
t.Errorf("could not create distro='%+v:%+v': %+v", test.dist, test.version, err)
}

12
syft/distro/identify.go
View File

@ -81,7 +81,7 @@ identifyLoop:
return distro
}
func assemble(name, version string) *Distro {
func assemble(name, version, like string) *Distro {
distroType, ok := IDMapping[name]
// Both distro and version must be present
@ -90,7 +90,7 @@ func assemble(name, version string) *Distro {
}
if ok {
distro, err := NewDistro(distroType, version)
distro, err := NewDistro(distroType, version, like)
if err != nil {
return nil
}
@ -101,7 +101,7 @@ func assemble(name, version string) *Distro {
}
func parseOsRelease(contents string) *Distro {
id, vers := "", ""
id, vers, like := "", "", ""
for _, line := range strings.Split(contents, "\n") {
parts := strings.Split(line, "=")
prefix := parts[0]
@ -112,10 +112,12 @@ func parseOsRelease(contents string) *Distro {
id = strings.TrimSpace(value)
case "VERSION_ID":
vers = strings.TrimSpace(value)
case "ID_LIKE":
like = strings.TrimSpace(value)
}
}
return assemble(id, vers)
return assemble(id, vers, like)
}
var busyboxVersionMatcher = regexp.MustCompile(`BusyBox v[\d\.]+`)
@ -125,7 +127,7 @@ func parseBusyBox(contents string) *Distro {
for _, match := range matches {
parts := strings.Split(match, " ")
version := strings.ReplaceAll(parts[1], "v", "")
distro := assemble("busybox", version)
distro := assemble("busybox", version, "")
if distro != nil {
return distro
}